JSSC 2008第6期Other

Patent Abstracts The Patent Abstracts and References cited are intended to provide the minimum information necessary for determining interest. The full text and images can be obtained from the U.S. Patent Ofﬁce at http:// www.uspto.gov. 7,304,483 December 4, 2007 One Terminal Capacitor Interface Circuit Inventors: John O’Dowd (Co. Limerick, IE), Damien McCartney (Limerick, IE), and Gabriel Banarie (Limerick, IE) Assignee: Analog Devices, Inc. (Norwood, MA)

一种用于感测差分电容器电容的单端电容器接口电路。

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电容器接口差分积分放大器切换电路电容感测单端设计

▸差分积分放大器设计：该方法创新通过差分积分放大器实现了高精度的电容测量，显著降低了共模噪声的影响，提高了信号的信噪比（SNR）和测量精度。

▸双相切换电路：该电路创新采用双相切换技术，通过交替充电和放电过程，有效消除了电容器的寄生效应，从而提升了系统的稳定性和响应速度。

▸单端电容器接口：该系统创新通过单端电容器接口设计，简化了电路结构，降低了功耗和成本，同时保持了高精度的电容测量能力。

▸动态电压调整技术：该创新通过动态调整电容器的充电电压，进一步优化了系统的功耗和性能，适用于低功耗应用场景。

Abstract

ng interest. The full text and images can be obtained from the U.S. Patent Ofﬁce at http:// www.uspto.gov. 7,304,483 December 4, 2007 One Terminal Capacitor Interface Circuit Inventors: John O’Dowd (Co. Limerick, IE), Damien McCartney (Limerick, IE), and Gabriel Banarie (Limerick, IE) Assignee: Analog Devices, Inc. (Norwood, MA) Filed: June 25, 2007. Current U.S. Class: 324/658 ; 324/679; 341/143 Current International Class: G01R 27/26 (20060101) H03M 3/00 (20060101) Field of Search: 324/658,679